#include <stdio.h>

int even( int n );

int main()
{    
    int n;

    scanf("%d", &n);
    if (even(n))
        printf("%d is even.\n", n);
    else
        printf("%d is odd.\n", n);
//for(n=-10;n<=10;n++)
//{
//		printf("%d%%2=%d\n",n,n%2); 
//		printf("!%d%%2=%d\n",n,!n%2); 
//}

    return 0;
}
int even(int n){
	if(n%2==0){
		return 1;
	}
	return 0;
}
